Gas Week

EWN Publishing

Too much fluoride: in Sri Lanka every grade of local tea yields a drink with more fluoride than the water it was made wit

Posted by gasweek on 9 October, 2007

In some parts of Sri Lanka drinking water contains up to five times the maximum fluoride recommended by the World Health Organization, and some 98 per cent of people are affected by fluorosis, reported The Economist (6/10/2007).

Hidden fluoride factor in tea: Rohaha Chandrajith and colleagues at the University of Peradeniya in Sri Lanka point out that no one has ever assessed the risk of tea, even though tea plants accumulate fluoride from the soil and some Sri lankan people drink it instead of water.

Too much: The team found that every grade of local tea yielded a drink with more fluoride than the water it was made with (Environmental and Geochemical Health, vol 29, p 429). Just four cups of tea a day would contain 1.36 milligrams of fluoride over and above what was in the water. The WHO’s recommended maximum is 4 milligrams.

The Economist, 6/10/2007

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